1 files changed, 44 insertions, 0 deletions
diff --git a/catalog-ui/src/app/ng2/pages/composition/graph/connection-wizard/from-node-step/from-node-step.component.ts b/catalog-ui/src/app/ng2/pages/composition/graph/connection-wizard/from-node-step/from-node-step.component.ts
new file mode 100644
index 0000000000..cffd58c9ea
--- /dev/null
+++ b/catalog-ui/src/app/ng2/pages/composition/graph/connection-wizard/from-node-step/from-node-step.component.ts
@@ -0,0 +1,44 @@
+import { Component, forwardRef, Inject, OnInit } from '@angular/core';
+import { Match } from 'app/models';
+import { Capability } from 'app/models/capability';
+import { Requirement } from 'app/models/requirement';
+import { IStepComponent } from 'app/models/wizard-step';
+import { Dictionary } from 'lodash';
+import { ConnectionWizardService } from '../connection-wizard.service';
+
+@Component({
+    selector: 'from-node-step',
+    templateUrl: './from-node-step.component.html'
+})
+
+export class FromNodeStepComponent implements IStepComponent, OnInit{
+
+    optionalRequirementsMap: Dictionary<Requirement[]>;
+    optionalCapabilitiesMap: Dictionary<Capability[]>;
+
+    constructor(@Inject(forwardRef(() => ConnectionWizardService)) public connectWizardService: ConnectionWizardService) {}
+
+    ngOnInit() {
+        this.optionalRequirementsMap = this.connectWizardService.getOptionalRequirementsByInstanceUniqueId(true);
+        this.optionalCapabilitiesMap = this.connectWizardService.getOptionalCapabilitiesByInstanceUniqueId(false);
+    }
+
+    preventNext = (): boolean => {
+        return !this.connectWizardService.selectedMatch || (!this.connectWizardService.selectedMatch.capability && !this.connectWizardService.selectedMatch.requirement);
+    }
+
+    preventBack = (): boolean => {
+        return true;
+    }
+
+    private updateSelectedReqOrCap = (selected: Requirement|Capability): void => {
+        if (!selected) {
+            this.connectWizardService.selectedMatch = null;
+        } else if (selected instanceof Requirement) {
+            this.connectWizardService.selectedMatch = new Match(<Requirement>selected, null, true, this.connectWizardService.connectRelationModel.fromNode.componentInstance.uniqueId, null);
+        } else {
+            this.connectWizardService.selectedMatch = new Match(null, <Capability>selected , false, null, this.connectWizardService.connectRelationModel.fromNode.componentInstance.uniqueId);
+        }
+    }
+
+}